Electrical condenser



June 24, 1930. A, M TRQGNER 1,766,565

ELECTRICAL CONDENSER Filedpec. 16, 1926 y2 sheets-sheet 1 ATTORNEY Jne 24, 1930.r A. M. TROGNER l 1,766,565

ELECTRICAL CONDENSER M KATTORNEY Patented .inne 24? lli@ ARTHUR M. TROGNER, OFTAKOIVIA PARK, MARYLAND, ASSIGNO, BY MESNE ASSGN- MENTS, TO FEDERAL TELEGRAJPH COMPANY,

A CORPORATION OF CALIFORNIA ELECTRICAL CONBENSER Application led December lit, 1926. Serial No. 155,223.

My invention relates broadly to electrical condensers and more particularly to a condenser construction particularly adapted for high frequency -transmission systems'.`

One of the. objects lof my invention is to provide a construction of electrical con! denser of small physical size but high electrical capacity -for high frequency operation i Y with a high degree'of eiiiciency.

Another Jobject of my invention is to provide a construction of high frequency conldenserI constituted by a plurality of independent condenser units connected in parallel paths and arranged in such manner that the inductive reactance of each parallel path is maintained substantially equal.

Another object of my invention is topro` vide a constructionof high-frequency electrical condenser in which 'a plurality of individual fixed condenser.A units are 'arranged in parallel and connected between equalizing conductor members in such manner that inequalities in resistance and capacity of the units may be compensated and the condenser operated at high. efficiency with minimum losses.

Still another object -o my invention is to provide a construction of high frequency condenser made up of aplurality of parallel connected fixed condenser units where individual units may be readily removed or replaced, or inthe event of puncture and subsequent short circuit means are provided for effectively excluding the condensers from the circuit. y y

A still further object of my invention resides in the construction of a high quency condenser where the total capacity is obtained by means of the assembly oia plurality of ixed condenser units which are 1 air-cooled and not subject to dielectric losses Inormally existent by the close association'orn i a case which normally may be iilled withy insulating' material.

@ther `and further objects of myinventionwill be understood .from the specification hereinafter following by reference to the accompanying drawings wherein: Figure l illustrates the assembly of a high .frequency electrical condenser constructed in accordance with my invention, the condenser assembly being partially broken away and illustrated in cross-section formore ade-j quately disclosingtlie invention; Fig. 2 illustrates a modified mounting forA the lindividual condenser 'units of the-condenser system Where each condenser is protected by fuses for automatically removing the condenser from the circuit in the event of puncture; and Figs. 3 andeI show modified constructions of high frequency condensers embodying the principles of my invention. i

In connection with the design of high frequency transmitters great difiiciilty .has-been experienced in obtaining lixed condensers which will carry the currents required .and stand up under the voltages applied in sets of more than V2 to l lr.' w. rating. Atthese frequenciesthe containing cases and wax fillers used in the conventional designs of condensers introduce losses which are prohibitive unless the condensers are made excessively large and expensive. The construction of condenser in accordance with inyinvention makes use of small commercial condenser units in proper series-parallel arrangement.

in arranging condenser units in parallel for operation on high frequencies it is very important that the inductive reactance of each of the' parallel paths be kept as nearly equal as practicable. In the form of condenser system of .my invention this is accomplished in one form by vplacing the small units in the plane oi a cylinder with common. 'terminals at the ends coaxial With the cylinder and in a inodiled form by distributing part ci? 'the condensers radially out from one terminal and others radially into the second terminal. Eachl form .has its advantages for certain uses.

(fr) Symmetrical arrangement insures zo the condenser an with expensive container and' wax fillers and eliminates losses caused by presenceof 'case and filler. (d) Open construction also provides for i ready removal' of any condenser units which' ma become damaged.

y (y-More efficient natural cooling .provided. 1. (ff) Each individual condenser unitmay w be used to automatically remove it from the circuit in case of puncture.

Condenser system is less expensive and .physically smaller in size.tharr 'convdensers of 'equivalent capacity heretofore available.

. .Referring tothe drawing indetail reference character 1 designates the top hoodx ositel terminal of thecondenser system.- he condenser assembly may be supported from a metallic frame such as the frame of the transmitter or, the parts 3 and 4 may be replaced bya terminal similar to'member 6.

and the condenser suitably suspended from s opposite'ends.- Hood 1 is providedwith an annular skirt depending therefrom l' whle hood 2 isprovided with anupwardly extending annular skirt 14. Fixedcondenser units 8, 8", 8", 8c and 8d have their terminals con-v nected to the skirt 7 and depend downwardly therefrom with the opposite sides of the con-l densers connected to the equalizing ring member 9. i Anothenset of fixed condenser of fixed' condenser units in the equalizing ring 9 as representedat 10,.'10, 10", 10' and 10", and the lower terminalsof these fixed and' 12l are4 connected. The lower terminals of this last set of fixed condense-rs are an\ chored to the annular skirt 14 offthe coni ductive hood 2.

f .In order to provlde -fofthe 'amo-mat'l re' made and no limitations upon my invention 'moval of lafixed cndenserunitfrom the condenser system in the event of puncture, I

system of fuses which may be interposed between opposite ends of .the several condenser units and the terminal hoods 1 and 2. For

-thispu-rpose I provide within the annularv skirt 7 of hood 1 an insulated ring member fis such that. the condenser units can be read-- maintaining the temperature of the condenunits connect tothe terminals of the first set.

.certain preferred embodiments, I desire that have shown in-Fig, 2 the arrangement of a:

by Letters Patent of `the 15, which provides a support for the condensers 8-8dvwith fuse members 19 inter` posed between the upper terminals of.con denser 8 and the conductive hood 1. A similar insulating ring member 16 isl provided in association with the equalizing ring 9, which provides a support for lfuse member. 20 which interconnect the upper terminals 18 of condensers 10--10d by means of fuses 20. In the event of puncture an individual condenser unit may be 'automatically rcmoved from the circuitwhile the high frequencycur'rent is conducted througn the remaining active condenser units in 4the system. I

.In the ,modified condenser system su'clilas illustrated in 3 and 4 the condenser units are arranged in radial formation between the conductive circular discs 21 and 22 each having opposed terminals 23 vand 24.

An insulated pedestal member 3.5 may be'85 yprovidedbetween the conductive terminal frequency current, due to small inequalities in resistance and capacity of the umts, is compensated for by th equalizing rings.. An arrangement of fuses similar to the construction -illustrated in Fig. 2 may be pro-` vided and the mounting of Ieach condenser ily detached from. or inserted `upon the `equalizing'rings.- 'I he entire assembly off I condenser units is such that cooling air may be circulated around the condenser units for ser units at-constant value. .i

The arrangement' of the condenser units is symmetrical which insures ual current through all of the' condenser umts if of the same capacity value. None of'v the condenser 'units are .workedunderfoverload and the tendency of theV equalizing rings to redis- .tribute the voltage-and current to compensi sate forsmallinequalitiesl in resistance and capacityl ofthe units insures the operation of a high frequencyl condenser system at higi efficiency.

hile I. have described my invention-in it be understood that-modifications may be are intended 'other than areimposed by the scope of the. appended claims.

J .What I claim as new and desire to secure United States is as `,resistance and capacity of said condenser,

funits.

rality of fixed condenser units of substantially the same capacity symmetrically arranged between 'said equalizing conductive ring members forming a substantially .hollow cylindrical frame whereby high frequency current may'be distributed through said frame structurevwhile compensating for inequalities in resistance and capacity` of 'said condenser units and terminals positioned at opposite ends of said frame structure and connected with the ring members adjacent the extremities of said .frame structure.

" `2. A high frequency condenser' system` comprising a frame structure, terminals at opposite ends of said frame structure, a plu' rality-of equalizing ring members disposed' at separated'points between said terminals and a plurality of sets of individually encased vfixed condenser units of substantially the-same capacity connected between said equalizing ring members and' said terminals and arranged on the exterior 'limits of said frame 'structure for distributing high frequency current through said condenser system while compensating for inequalities in j 3. A high frequency condenser system comprising Aa frame structure having terminal members at opposite ends of the framel structure, aplurality of equalizing ring members disposed between sai-d terminals and a plurality of setsof individually encased fixed condenser units connected between said terminal members and 'operating to mechanically support each other and said cqualizmg ring members, said condenser units being aligned one with another on thev 'exterior' limits of `said frame structure and providing a plurality ofequal paths for the distribution of-higli frequency current between said terinin'al'inembei's while compensating for small inequalities in resistance and capacity of said condenser units" 4. A high frequency condenser systemv comprising a frame striicture having termi4- nal members at opposite ends thereof, a plurality of intermediate conductive equalizmg 'ring membersdisposed between said 'terminal members, a plurality of independent con;

denser' units, said condenser serving to mef clianically support said conductive equalizling ring members and to mutually support each other andsaid ring members operating to compensate `for s malll inequalities in resistance and capacity of said' condensei'junits said condensersall lying in planes coincident with the exterior limits of said frame struc- A high frequency condenser system comprising a pairof-terminal members, a plurality of conductive equalizing ring members, a plurality of sets ofii'xed condenser units disposed between said terminal membersand saidfconductive equalizing ring members, said ring members and fixed con. denser units conjointly forming a closure having a substantially hollow interior, said condenser units having their centers dis osed in planes passing through the axes of said terminal memb'ers and serving to mechanically support said conductive ring members while said conductive ring members provide lateral paths between said condenservunits for compensating for inequalities in resistance andcapacityof said condenser units.-

s6. An electrical condenser. comprising a plurality of fixed condenser units, upper and lower frame members forming substantiall a hollow enclosure and means for detachably mounting said fixed condenser units on said upper and lower frame members remote from the hollow interior thereof for establishing a plurality of independent electrical circuits through said condenser, said condenser units izing ring members, condenser units insclected sets being aligned o'ne with respect to another and connected end to end in planes passing through the axis of said frame structure, said condenser units serving to mechanically support saidv conductive equalizing v'ring mcmbers'with respect to said terminal members while said conductive equalizing ring members compensate for inequalities `in the electrical characteristics of said condenser units and provide a plurality of paths for the distribution of high frequency current `between said terminal members.

8. A high frequency electrical condenser system comprising a pair Iof terminal members,l a plurality of equalizing conductive i ring members disposed between said terminal members,` sets of fixed condenser units connected between saidterminal` members for 'supporting said conductive equalizing 'ring members, fusibler connectors disposed between said terminal members and each of said fixed `condenser units and between the abutting .-terminals 'ofjsaid fixed condenser units whereby defective condenser/units may be automatically eliminated from the highfre- .quency condenser system while high fre'-A quency current is redistributed in a plurality of paths through said high frequency con; denser system.

ARTHUR M. TRoeNEii.

iio 

